@article{Etessami_2002,
    doi = {10.1006/inco.2001.2953},
    url = {https://doi.org/10.1006%2Finco.2001.2953},
    year = {2002},
    month = {dec},
    publisher = {Elsevier {BV}},
    volume = {179},
    number = {2},
    pages = {279--295},
    author = {Kousha Etessami and Moshe Y. Vardi and Thomas Wilke},
    title = {First-Order Logic with Two Variables and Unary Temporal Logic},
    journal = {Information and Computation}
}

@article{Etessami_2002, doi = {10.1006/inco.2001.2953}, url = {https://doi.org/10.1006%2Finco.2001.2953}, year = {2002}, month = {dec}, publisher = {Elsevier {BV}}, volume = {179}, number = {2}, pages = {279--295}, author = {Kousha Etessami and Moshe Y. Vardi and Thomas Wilke}, title = {First-Order Logic with Two Variables and Unary Temporal Logic}, journal = {Information and Computation} }